Yankee fans are snatching up T-shirts, making party plans and daydreaming of World Series glory once again as the Bombers get set for tonight’s Fall Classic opener against the Florida Marlins.

“I’m elated, I’m euphoric,” said Michael Carlucci, 33, a medical student from Manhattan who was among the legions of Yankee fans still riding high from Thursday night’s miracle comeback against the Red Sox.

“I’m supremely confident the Yankees will beat the Marlins. I can hardly concentrate in school,” he added. “Thoughts of the Yankees keep creeping in.”

In Brooklyn, Yankee fan Murray Markowitz is planning to host a World Series party tonight for more than a dozen of his friends. It’s a tradition that began in 1998 – and suffered only one interruption.

“We took a break last year because of disappointment,” the 33-year- old lawyer said, referring to last year’s early exit from the postseason at the hands of the Anaheim Angels. “But the tradition continues.”

A new Yankee supporter – Massachusetts-born Mayor Bloomberg – got into the World Series frenzy yesterday.

Hizzoner hosted a City Hall pep rally that included Yankee skipper Joe Torre and Game 7 hero Aaron Boone, who kept the Curse of the Bambino alive with an 11th-inning homer that snatched the pennant out of Boston’s hands.

“Do you believe the Babe is smiling? I do,” Bloomberg told a crowd of 400 flag-waving fans.

“Thank you for making last night probably the greatest moment in my life,” added Boone, who hit the first pitch of the home half of the inning into the left-field seats off knuckleballer Tim Wakefield.

“After this, Aaron’s going to go behind City Hall and teach me how to hit a knuckle ball,” quipped Bloomberg, who grew up outside Boston and had previously claimed to be a Bosox fan.

At the Yankees Clubhouse store on 42nd Street near Times Square, throngs of fans spent yesterday stocking up on T-shirts and other Yankee paraphernalia in preparation for Game 1 at Yankee Stadium tonight at 7:30.

“We’ve been open since 7 a.m. and people have been packing the store ever since,” said store manager David Flynn. “Everyone’s coming here, locals, tourists.”

“Tomorrow it’s sayonara,” said 47-year-old Manhattanite Lauren Fessender as she shopped at the store yesterday. “That doesn’t mean the series will be a pushover. But last night was such a huge success. And we pulled through. We have so many great players.”

“Last night proved everything. The Yankees will win,” Mark Youngelson, 30, said outside the store yesterday. “The Marlins will suffer. It’s an unfair advantage to play the World Series at Yankee Stadium. Sixty thousand people will be telling Ivan Rodriguez things about his mother he doesn’t want to know.”

The Yankees aren’t only favored in New Yorkers’ hearts. Las Vegas also loves them. The Bombers are the overwhelming favorite to win their 27th World Series title according to sports gambling bookmakers in Sin City.

At the Vegas Hilton yesterday, the Yanks were a “-250” favorite to win the world title, which means that the chance of them winning is so good you will only win $1 for every $2.50 you bet.

The Marlins are a “+200” underdog, meaning a gambler who takes a chance on them will double every dollar they spend if the Fish win.